* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, "Hiragino Sans", "Meiryo", system-ui, sans-serif;
  font-size: 16px;
  background: #f4f6f8;
  color: #222;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior: contain;
}

#appHeader {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center;
  background: #1a73e8; color: #fff;
  padding: 10px 12px;
  height: 56px;
  padding-top: calc(10px + env(safe-area-inset-top));
}
#appHeader h1 { flex: 1; font-size: 18px; margin: 0; text-align: center; }
#appHeader button {
  background: transparent; border: none; color: #fff;
  font-size: 22px; padding: 4px 10px; cursor: pointer; min-width: 44px;
}
#appHeader button.hidden { visibility: hidden; }

.screen { padding: 14px; max-width: 720px; margin: 0 auto; padding-bottom: 80px; }
.screen.hidden { display: none; }

.big-btn {
  display: flex; align-items: center; justify-content: center;
  width: 100%;
  padding: 18px 14px;
  margin: 10px 0;
  background: #fff;
  border: 1px solid #d0d4d9;
  border-radius: 14px;
  font-size: 17px;
  cursor: pointer;
  text-align: center;
  min-height: 60px;
  font-family: inherit;
}
.big-btn:active { background: #eef2f7; }
.big-btn.primary {
  background: #1a73e8; color: #fff; border-color: #1a73e8;
  font-weight: bold;
}
.big-btn .icon { margin-right: 12px; font-size: 24px; }

.status-line {
  text-align: center; margin-top: 20px; color: #777; font-size: 13px;
}
.status-line.ok { color: #1e8e3e; }
.status-line.err { color: #d93025; }

.card {
  background: #fff; border-radius: 14px;
  padding: 16px; margin-bottom: 14px;
  border: 1px solid #d0d4d9;
}
.card .id { color: #888; font-size: 12px; }
.card .name { font-size: 18px; font-weight: bold; margin: 4px 0; }
.card .meta { color: #555; font-size: 14px; margin-top: 4px; }
.card .stock-line {
  display: flex; gap: 16px; margin-top: 12px; padding-top: 12px;
  border-top: 1px dashed #d0d4d9; font-size: 15px;
}
.card .stock-line > div { flex: 1; text-align: center; }
.card .stock-line b { font-size: 24px; }
.card .stock-line.low { background: #fbe9e7; color: #c62828; border-radius: 8px; padding: 10px 8px; }
.card .stock-line.low b { color: #d32f2f; }
.card .memo { margin-top: 10px; font-size: 13px; color: #444; background: #fffce8; padding: 8px; border-radius: 6px; }
.card.low { border-color: #d93025; border-width: 2px; }

.form { background: #fff; border-radius: 14px; padding: 16px; margin: 12px 0; border: 1px solid #d0d4d9; }
.form label { display: block; font-size: 13px; color: #555; margin-top: 12px; font-weight: bold; }
.form input, .form select {
  width: 100%; padding: 14px;
  font-size: 17px;
  border: 1px solid #d0d4d9; border-radius: 10px; margin-top: 4px;
  background: #fff;
  font-family: inherit;
}
.form input:focus, .form select:focus { outline: 2px solid #1a73e8; }
.form input[readonly] { background: #f6f7f9; color: #666; }
.form .hint { color: #777; font-size: 12px; margin-top: 4px; }

.seg { display: flex; gap: 8px; margin-top: 4px; }
.seg-btn {
  flex: 1; padding: 14px; font-size: 17px;
  border: 1px solid #d0d4d9; background: #fff; border-radius: 10px; cursor: pointer;
  font-family: inherit;
}
.seg-btn.on { background: #1a73e8; color: #fff; border-color: #1a73e8; font-weight: bold; }

.input-full {
  width: 100%; padding: 12px;
  font-size: 16px;
  border: 1px solid #d0d4d9; border-radius: 10px; margin-bottom: 12px;
  font-family: inherit;
}

.filter-bar {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px;
  background: #fff; padding: 10px; border-radius: 10px; border: 1px solid #d0d4d9;
}
.filter-bar input {
  flex: 1; min-width: 140px;
  padding: 12px; font-size: 15px;
  border: 1px solid #d0d4d9; border-radius: 8px;
  font-family: inherit;
}
.filter-bar .chk { display: flex; align-items: center; gap: 6px; font-size: 14px; padding: 0 8px; }

.row {
  background: #fff; border: 1px solid #d0d4d9; border-radius: 10px;
  padding: 12px 14px; margin: 8px 0; cursor: pointer;
}
.row:active { background: #eef2f7; }
.row.low { border-left: 6px solid #d93025; }
.row .name { font-size: 15px; font-weight: bold; }
.row .meta { color: #555; font-size: 13px; margin-top: 2px; }
.row .stock { font-size: 14px; margin-top: 4px; }
.row .stock b { font-size: 17px; }

.hint { color: #666; font-size: 13px; margin: 8px 4px; line-height: 1.6; }

.qr-reader {
  width: 100%;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 8px;
  aspect-ratio: 1 / 1;
}
.qr-status { text-align: center; padding: 10px; color: #555; font-size: 14px; min-height: 24px; }
.qr-actions { margin-top: 8px; }

#loading {
  position: fixed; inset: 0;
  background: rgba(255,255,255,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
#loading.hidden { display: none; }
.spinner {
  width: 48px; height: 48px;
  border: 4px solid #d0d4d9; border-top-color: #1a73e8;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

#toast {
  position: fixed; left: 50%; bottom: 30px;
  transform: translateX(-50%);
  background: #222; color: #fff;
  padding: 14px 20px; border-radius: 30px;
  font-size: 15px;
  z-index: 200;
  max-width: 90%;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
#toast.hidden { display: none; }
#toast.error { background: #d93025; }
#toast.success { background: #1e8e3e; }

/* 棚卸モード */
.st-banner {
  background: #b45309; color: #fff;
  padding: 12px 14px; border-radius: 10px;
  font-size: 15px; font-weight: bold;
  margin-bottom: 12px; text-align: center;
}
#stToggle.on {
  background: #b45309; color: #fff; border-color: #b45309;
}
#appHeader.st-on { background: #b45309; }
.st-count { color: #b45309; font-weight: bold; }

.hidden { display: none !important; }